If you have not upgraded your Devcoin daemon please do so! Download source and binaries can be found at http://www.devcoin.org and click the 'Download' tab.

If you do wish to use the Devcoin daemon you can always setup an account at http://vircurex.com (https://www.vircurex.com/welcome/register?referral_id=997-111) and use that as an online Devcoin wallet.